Box-controlling mechanism for looms.



Patented Deb. l2, I899. C. A. TAFT 8. H. A. OWEN. BUX CONTROLLINGMECHANISM FOR LOUMS.

[Application filed July 29. 1898.

2 Sheets-Sheet I.

No Model.

INYENZ'UHSI WITNESEEE.

Tens coy, PHOTO-LUNG" WASHINGTON. o. c.

No. 638.944. Patented Dec. l2, I899.

c. A. TAFT & H. A. qwEN. BOX CONTROLLING MECHANISM FOR LODMS.

(Application filed July 29, 1898.) (No Model.)

2 Sheets-Sheet 2.

A52 :'Z+"-- WITNESSES. IN 'sgm'r DEE. WM gm m l rrn STATES PATENT Erich,

CYRUS A. TAFT AND HENRY A. OWEN, OF WHITINSVILLE, MASSACHUSETTS,ASSIGNORS TO THE WHITIN MACHINE WORKS, INCORPORATED, OF SAME PLACE.

BOX-CONTROLLING MECHANISM FoR Looms.-

sPEoxFIcATfou forming part or Letters Patent No. 638,944, dated December12, 1899.

Application filed July 29,1898.

To all whom it may concern-.-

Be it known that we, CYRUS A. TAFT and HENRY A. OWEN, of Whitinsville,in the county of Worcester and State of Massachu- 5 setts, have inventeda new and useful Improvement in Box-Controlling Mechanism for Looms; andwe hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accomr panyingdrawings, forming part of this specification.

The invention has reference to an improvement in a drop-box loom; and itconsists in the peculiar and novel construction of a vibrator controlledby the pattern-chain and the boxoperating rocker-arm provided with alatch, whereby the shuttle-boxes are firmly locked in the raisedposition.

Figure 1 is a side view of part of a loom 20 provided with our improvedbox-controlling mechanism. Fig. 2 is a side view, on an en larged scale,of the box-controlling mechanism. Fig. 3 is atop view of the same. Fig.4 is a sectional View through the line A A in Fig. 1. Fig. 5 is a sideview of the friction-clamp. Fig. 6 is a top view of one end of thevibrating fork.

In the drawings, 1 indicates the side frame of a loom, only so much ofwhich being shown as is required to illustrate our invention; 2, a camsecured to the cam-shaft. This cam is shaped so that the dwell 3 holdsthe lever 5 stationary during more than half the revolution of the cam,and the throw l 4 acts to operate the lever 5 forward and backwardduring less than half the revolution of the cam; The lever 5 is pivotedon the stud 5, projecting from the frame, engages at one end with thegroove in the cam 2, and is provided at the opposite end with thesegmental slot 6. The fork 7 is pivotally secured in the slotted end ofthe lever 5, is provided'with the slot 8, and is adjustably connectedwith the rod 9, which is usually connected to a lever controlled by thepattern-chain. The fork 7 has at one of the bifurcated ends theknock-off 10 and at the other end the knock-olf pin 11, adjustablysecured in a slot in the end 11 of the fork. The'rocking plate 12 isprovided with the sleeve 13 and is journaled on the post 14. In thepreferred form we provide the bracket 15 and secure to the same the post14, also the post 5, forming the pivotal support for the Serial No.687,166, (No model.)

lever 5, and form on or secure to the bracket the locking post 16, sothat when the bracket is secured to the frame 1 these parts are in theirrelative positions. The rocking plate 12 is provided with the hook 17,adapted to engage with the knock-off pin 1 1 on one end ofthe fork 7 andwith the slotted bracket 18,in which the lower end of the lifter-rods 1919 is sup ported. Thelifter-rods 19 19 connect with the spring-clamp 20,which engages with a stud 21*, secured to the box-rod 21 in the usualmanner. The latch-lever 22 is pivotally supported on the rocking plate12 and is provided on one side of its pivotal support with a catchengaging with the locking-post 16 and at the opposite side with a hook22, adapted to en-.

gage with the knock-off 10 of the fork 7. The spiral spring 23 holds thelatch-lever 22 in the normal position against the stop 24.

To a pin 15*, projecting from the arm 15 of the bracket 15, the clamp 25is secured, hearing on the sleeve 13 of the rocking plate 12, the thumb-nut26, bearing on the coiled spring 27, regulating the frictionalcontact of the clamp on the sleeve 13. The lower end of the box-rod 21extends through a hole in the bracket 28, which forms the pivotalsupport of the picker-stick 29. The collar 30 is secured to the box-rod21 by a set-screw adjusted so as to sustain the box-rod on the bracket28 when the upper box is on a line with the shuttle-race on the lay. Thedevices are shown in the drawings in the positions they occupy when theboxes are in the raised position, with the lower box on a line with theshuttle-race on the lay.

To enable others skilled in the art .to use our invention, we will nowmore fully describe the operation of the same.-

lVith all parts in the position shown in-Figs. 1 and 2 the rotation ofthe cam 2 will maintain the same in this position until the roller onthe upper endof the lever 5 passes from the dwell 3 of the cam andenters the operative part 4, when that end of the lever 5 is movedquickly backward and the lower end, with the fork 7, is moved forward.The knockoff 10 now encounters the hook on the upper end of thelatch-lever 22, disengages the catch from the locking-post 16,therebyreleasing the rocking plate 12, which turns on the post let, and thebox-rod 21, with the boxes, descends until the downward movement isarrested by the collar 30 coming in contact with the bracket 28. Whennow the pattern-chain raises the rod 9, and through it the fork 7, theknock-off pin 11 engages with the hook 17 and. turning the rocking plate12 raises the box-rod 21 and the boxes into the position shown in Figs.1 and 2, the latch-lever 22 automatically engages with the lock-post 16and locks the boxes in the raised position. The distance between theknock-off end 10 and the knock-off pin 11 is-such that after the changein the position of the boxes is made the fork 7 may continue to vibratewithout disturbing the boxes until a change is required by a projectionon the pattern-chain or a depression. 31 indicates the upper and 31. thelower shuttlebox.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent 1. In a drop-box loom, the combination of thefollowing instrumentalities: a box-rod supporting two shuttle-boxes, arigid support for the box-rod when in the lowered position, a stud onthe box-rod, a cam on the cam-shaft, a lever pivotally supported on afixed part of the loom, one end of the lever engaging with the cam onthe cam-shaft, a fork connected wit-h the other end of the lever, arocking plate, a lifter-rod connected with the rocking plate and withthe stud on the box-rod, a hook on thelower part of the rocking plate,aspringpressed latclrlever, pivoted on the upper part of thelocking-plate, adapted to engage with a fixed locking-post, and a rodconnected with the fork, controlling its vertical position, whereby theshuttle-boxes are firmly supported in their raised and loweredpositions, as described.

2. In adrop-box loom, the combination with the box-rod supporting twoshuttles, a rock ing plate, lifter-rods connected with the rocking plateand with a stud on the box-rod, a

stud on the box-rod, a spring-pressed latch pivoted on the rockingplate, a locking-post, a vibrating fork controlled by the patternchain,and the pattern-chain; whereby one arm of the fork, when it encountersthe rocking plate, acts to lift the boxes and the other arm of the forkacts to release the springpressed latch and permits the descent of theboxes, as described.

3. In a drop-boxloom, the combination with the box-rod, the rockingplate 12 having the hook 17, the sleeve 13, the latching-lever 22, andconnections between the rocking plate and the box-rod, and the fork '7controlled through the rod 9, of the cam 2, the lever 5 connected withthe fork 7 and the cam, a fixed post 16, and the spring-pressed clampengaging with the sleeve 13; whereby the fork controlled by thepattern-chain operates the box-controllin g rocking plate to raise orlower the shuttle-boxes resisted by the adjustable friction-clamp, asdescribed.

4.. In a drop-box loom, the combination with the box-rod 21, the stud 21on the box-rod, the bracket 28, the collar on the box-rod, the rockingplate 12, a spring=latch on the rocking plate engaging with a fixed partof the loom, two lifter-rods, connected with the rocking plate at thelower ends, held to= gether bya coiled spring and adapted to embrace thestud 21 on the lifter-rod,and means, substantially as described, forrocking the rocking plate to lift the boxes and disengagin g thespring-latch to drop the boxes; whereby the boxes are firmly supportedin their raised and lowered positions, as described.

In witness whereof we have hereunto set our hands.

CYRUS A. TAFT. HENRY A. OWEN.

Witnesses:

R. K. BROWN, S. M. PoLLooK.

